The Great Mississippi Flood occurred in 1927 and is considered one of the worst floods in U.S. history.

The Great Mississippi Flood of 1927 was a catastrophic event that devastated vast regions of the Mississippi River Basin. Triggered by excessive rainfall and the melting of snow, the flood displaced hundreds of thousands of people and submerged large areas in several states, including Louisiana, Arkansas, and Mississippi. The disaster prompted significant changes in U.S. flood management policies, leading to the development of levees and flood control measures, and remains a critical moment in American environmental history.